Mean structure and interannual variability of the slopewater system south of Newfoundland
Two sets of repeat hydrographic sections, centered at 558W and 508W, are used to study the mean features and long-term variability of the slopewater system south of Newfoundland, inshore of the Gulf Stream. The upper-layer flow is considered first, consisting of the westward-flowing Labrador Current...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.546.3409 2023-05-15T16:00:40+02:00 Mean structure and interannual variability of the slopewater system south of Newfoundland Robert S. Pickart Theresa K. Mckee Daniel J. Torres Stephanie A. Harrington Woods Hole The Pennsylvania State University CiteSeerX Archives 1999 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.3409 http://www.whoi.edu/science/PO/pickart/pickart_pubs_pdf/jpo29_1999.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.3409 http://www.whoi.edu/science/PO/pickart/pickart_pubs_pdf/jpo29_1999.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.whoi.edu/science/PO/pickart/pickart_pubs_pdf/jpo29_1999.pdf text 1999 ftciteseerx 2016-01-08T11:18:19Z Two sets of repeat hydrographic sections, centered at 558W and 508W, are used to study the mean features and long-term variability of the slopewater system south of Newfoundland, inshore of the Gulf Stream. The upper-layer flow is considered first, consisting of the westward-flowing Labrador Current at the shelfbreak (input into the slopewater system) and the eastward-flowing slopewater current over midslope (export out of the slopewater system). Particular attention is paid to the slopewater current, as this is a less well-known feature. The velocity structure of the slopewater current is different at the two longitudes, associated with a change in structure of the density front. Its mean transport is found to be significantly less than historical estimates. Both the lateral position and the strength of the current vary on long timescales. These fluctuations are correlated with the variability of the Labrador Current, as well as with changes in the deeper components of the slopewater (the Labrador Sea Water and Denmark Strait overflow water). The general picture that emerges is that the entire upper-layer slopewater circulation spins up/down on interannual timescales, coincident with strengthening/weak-ening of the overflow component of the deep western boundary current. Interestingly, more undiluted Labrador Sea Water is present in the spundown state. 1. Text Denmark Strait Labrador Sea Newfoundland Unknown Newfoundland |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
Two sets of repeat hydrographic sections, centered at 558W and 508W, are used to study the mean features and long-term variability of the slopewater system south of Newfoundland, inshore of the Gulf Stream. The upper-layer flow is considered first, consisting of the westward-flowing Labrador Current at the shelfbreak (input into the slopewater system) and the eastward-flowing slopewater current over midslope (export out of the slopewater system). Particular attention is paid to the slopewater current, as this is a less well-known feature. The velocity structure of the slopewater current is different at the two longitudes, associated with a change in structure of the density front. Its mean transport is found to be significantly less than historical estimates. Both the lateral position and the strength of the current vary on long timescales. These fluctuations are correlated with the variability of the Labrador Current, as well as with changes in the deeper components of the slopewater (the Labrador Sea Water and Denmark Strait overflow water). The general picture that emerges is that the entire upper-layer slopewater circulation spins up/down on interannual timescales, coincident with strengthening/weak-ening of the overflow component of the deep western boundary current. Interestingly, more undiluted Labrador Sea Water is present in the spundown state. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Robert S. Pickart Theresa K. Mckee Daniel J. Torres Stephanie A. Harrington Woods Hole |
spellingShingle |
Robert S. Pickart Theresa K. Mckee Daniel J. Torres Stephanie A. Harrington Woods Hole Mean structure and interannual variability of the slopewater system south of Newfoundland |
author_facet |
Robert S. Pickart Theresa K. Mckee Daniel J. Torres Stephanie A. Harrington Woods Hole |
author_sort |
Robert S. Pickart |
title |
Mean structure and interannual variability of the slopewater system south of Newfoundland |
title_short |
Mean structure and interannual variability of the slopewater system south of Newfoundland |
title_full |
Mean structure and interannual variability of the slopewater system south of Newfoundland |
title_fullStr |
Mean structure and interannual variability of the slopewater system south of Newfoundland |
title_full_unstemmed |
Mean structure and interannual variability of the slopewater system south of Newfoundland |
title_sort |
mean structure and interannual variability of the slopewater system south of newfoundland |
publishDate |
1999 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.3409 http://www.whoi.edu/science/PO/pickart/pickart_pubs_pdf/jpo29_1999.pdf |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Denmark Strait Labrador Sea Newfoundland |
genre_facet |
Denmark Strait Labrador Sea Newfoundland |
op_source |
http://www.whoi.edu/science/PO/pickart/pickart_pubs_pdf/jpo29_1999.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.3409 http://www.whoi.edu/science/PO/pickart/pickart_pubs_pdf/jpo29_1999.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766396670715625472 |